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-rw-r--r--sys/dev/fdt/imxtmu.c151
1 files changed, 93 insertions, 58 deletions
diff --git a/sys/dev/fdt/imxtmu.c b/sys/dev/fdt/imxtmu.c
index af9e50bb226..b796b0fad86 100644
--- a/sys/dev/fdt/imxtmu.c
+++ b/sys/dev/fdt/imxtmu.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: imxtmu.c,v 1.1 2019/08/27 12:51:57 patrick Exp $ */
+/* $OpenBSD: imxtmu.c,v 1.2 2020/03/20 09:13:03 patrick Exp $ */
/*
* Copyright (c) 2018 Patrick Wildt <patrick@blueri.se>
*
@@ -27,22 +27,29 @@
#include <dev/ofw/openfirm.h>
#include <dev/ofw/fdt.h>
-
-/* registers */
-#define TMU_TMR 0x000
-#define TMU_TMR_ME (1U << 31)
-#define TMU_TMR_ALPF (0x3 << 26)
-#define TMU_TMR_SENSOR(x) (1 << (15 - (x)))
-#define TMU_TMTMIR 0x008
-#define TMU_TMTMIR_DEFAULT 0xf
-#define TMU_TIER 0x020
-#define TMU_TTCFGR 0x080
-#define TMU_TSCFGR 0x084
-#define TMU_TRITSR(x) (0x100 + ((x) * 0x10))
-#define TMU_TTR0CR 0xf10
-#define TMU_TTR1CR 0xf14
-#define TMU_TTR2CR 0xf18
-#define TMU_TTR3CR 0xf1c
+#include <dev/ofw/ofw_clock.h>
+
+/* i.MX8MQ registers */
+#define TMU_MQ_TMR 0x000
+#define TMU_MQ_TMR_ME (1U << 31)
+#define TMU_MQ_TMR_ALPF (0x3 << 26)
+#define TMU_MQ_TMR_SENSOR(x) (1 << (15 - (x)))
+#define TMU_MQ_TMTMIR 0x008
+#define TMU_MQ_TMTMIR_DEFAULT 0xf
+#define TMU_MQ_TIER 0x020
+#define TMU_MQ_TTCFGR 0x080
+#define TMU_MQ_TSCFGR 0x084
+#define TMU_MQ_TRITSR(x) (0x100 + ((x) * 0x10))
+#define TMU_MQ_TTR0CR 0xf10
+#define TMU_MQ_TTR1CR 0xf14
+#define TMU_MQ_TTR2CR 0xf18
+#define TMU_MQ_TTR3CR 0xf1c
+
+/* i.MX8MM registers */
+#define TMU_MM_TER 0x000
+#define TMU_MM_TER_EN (1U << 31)
+#define TMU_MM_TRITSR 0x020
+#define TMU_MM_TRITSR_LOW_LIMIT 10
#define HREAD4(sc, reg) \
(bus_space_read_4((sc)->sc_iot, (sc)->sc_ioh, (reg)))
@@ -66,7 +73,9 @@ struct imxtmu_softc {
int imxtmu_match(struct device *, void *, void *);
void imxtmu_attach(struct device *, struct device *, void *);
-void imxtmu_refresh_sensors(void *);
+
+void imxtmu_mm_refresh_sensors(void *);
+void imxtmu_mq_refresh_sensors(void *);
struct cfattach imxtmu_ca = {
sizeof(struct imxtmu_softc), imxtmu_match, imxtmu_attach
@@ -81,7 +90,8 @@ imxtmu_match(struct device *parent, void *match, void *aux)
{
struct fdt_attach_args *faa = aux;
- return OF_is_compatible(faa->fa_node, "fsl,imx8mq-tmu");
+ return OF_is_compatible(faa->fa_node, "fsl,imx8mm-tmu") ||
+ OF_is_compatible(faa->fa_node, "fsl,imx8mq-tmu");
}
void
@@ -102,42 +112,7 @@ imxtmu_attach(struct device *parent, struct device *self, void *aux)
printf("\n");
- /*
- * XXX: This thermal unit can show temperatures per node, and
- * XXX: the thermal-zones can reference this. But since we do
- * XXX: not register ourselves with such a infrastructure we can
- * XXX: live with just extracting sensor 0: the CPU.
- */
- sc->sc_sensorid = 0;
-
- HWRITE4(sc, TMU_TIER, 0);
- HWRITE4(sc, TMU_TMTMIR, TMU_TMTMIR_DEFAULT);
- HWRITE4(sc, TMU_TMR, 0);
-
- if (OF_getpropintarray(faa->fa_node, "fsl,tmu-range", range,
- sizeof(range)) != sizeof(range))
- return;
-
- HWRITE4(sc, TMU_TTR0CR, range[0]);
- HWRITE4(sc, TMU_TTR1CR, range[1]);
- HWRITE4(sc, TMU_TTR2CR, range[2]);
- HWRITE4(sc, TMU_TTR3CR, range[3]);
-
- len = OF_getproplen(faa->fa_node, "fsl,tmu-calibration");
- if (len <= 0 || (len % 8) != 0)
- return;
-
- calibration = malloc(len, M_TEMP, M_WAITOK);
- OF_getpropintarray(faa->fa_node, "fsl,tmu-calibration", calibration,
- len);
- for (i = 0; i < (len / 4); i += 2) {
- HWRITE4(sc, TMU_TTCFGR, calibration[i + 0]);
- HWRITE4(sc, TMU_TSCFGR, calibration[i + 1]);
- }
- free(calibration, M_TEMP, len);
-
- HWRITE4(sc, TMU_TMR, TMU_TMR_SENSOR(sc->sc_sensorid) |
- TMU_TMR_ME | TMU_TMR_ALPF);
+ clock_enable_all(faa->fa_node);
strlcpy(sc->sc_sensordev.xname, sc->sc_dev.dv_xname,
sizeof(sc->sc_sensordev.xname));
@@ -147,16 +122,76 @@ imxtmu_attach(struct device *parent, struct device *self, void *aux)
sc->sc_sensor.flags = SENSOR_FINVALID;
sensor_attach(&sc->sc_sensordev, &sc->sc_sensor);
sensordev_install(&sc->sc_sensordev);
- sensor_task_register(sc, imxtmu_refresh_sensors, 5);
+
+ if (OF_is_compatible(faa->fa_node, "fsl,imx8mm-tmu")) {
+ HSET4(sc, TMU_MM_TER, TMU_MM_TER_EN);
+ sensor_task_register(sc, imxtmu_mm_refresh_sensors, 5);
+ }
+
+ if (OF_is_compatible(faa->fa_node, "fsl,imx8mq-tmu")) {
+ /*
+ * XXX: This thermal unit can show temperatures per node, and
+ * XXX: the thermal-zones can reference this. But since we do
+ * XXX: not register ourselves with such a infrastructure we can
+ * XXX: live with just extracting sensor 0: the CPU.
+ */
+ sc->sc_sensorid = 0;
+
+ HWRITE4(sc, TMU_MQ_TIER, 0);
+ HWRITE4(sc, TMU_MQ_TMTMIR, TMU_MQ_TMTMIR_DEFAULT);
+ HWRITE4(sc, TMU_MQ_TMR, 0);
+
+ if (OF_getpropintarray(faa->fa_node, "fsl,tmu-range", range,
+ sizeof(range)) != sizeof(range))
+ return;
+
+ HWRITE4(sc, TMU_MQ_TTR0CR, range[0]);
+ HWRITE4(sc, TMU_MQ_TTR1CR, range[1]);
+ HWRITE4(sc, TMU_MQ_TTR2CR, range[2]);
+ HWRITE4(sc, TMU_MQ_TTR3CR, range[3]);
+
+ len = OF_getproplen(faa->fa_node, "fsl,tmu-calibration");
+ if (len <= 0 || (len % 8) != 0)
+ return;
+
+ calibration = malloc(len, M_TEMP, M_WAITOK);
+ OF_getpropintarray(faa->fa_node, "fsl,tmu-calibration", calibration,
+ len);
+ for (i = 0; i < (len / 4); i += 2) {
+ HWRITE4(sc, TMU_MQ_TTCFGR, calibration[i + 0]);
+ HWRITE4(sc, TMU_MQ_TSCFGR, calibration[i + 1]);
+ }
+ free(calibration, M_TEMP, len);
+
+ HWRITE4(sc, TMU_MQ_TMR, TMU_MQ_TMR_SENSOR(sc->sc_sensorid) |
+ TMU_MQ_TMR_ME | TMU_MQ_TMR_ALPF);
+
+ sensor_task_register(sc, imxtmu_mq_refresh_sensors, 5);
+ }
+}
+
+void
+imxtmu_mm_refresh_sensors(void *arg)
+{
+ struct imxtmu_softc *sc = (struct imxtmu_softc *)arg;
+ uint32_t value;
+
+ value = HREAD4(sc, TMU_MM_TRITSR);
+ if (value < TMU_MM_TRITSR_LOW_LIMIT)
+ return;
+ value = (value & 0xff) * 1000000;
+
+ sc->sc_sensor.value = value + 273150000;
+ sc->sc_sensor.flags &= ~SENSOR_FINVALID;
}
void
-imxtmu_refresh_sensors(void *arg)
+imxtmu_mq_refresh_sensors(void *arg)
{
struct imxtmu_softc *sc = (struct imxtmu_softc *)arg;
uint32_t value;
- value = HREAD4(sc, TMU_TRITSR(sc->sc_sensorid));
+ value = HREAD4(sc, TMU_MQ_TRITSR(sc->sc_sensorid));
value = (value & 0xff) * 1000000;
sc->sc_sensor.value = value + 273150000;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.